I've enjoyed the Niven-Pournelle collaborations since the early-mid 70s. The Mote and Lucifer's Hammer especially have withstood the test of time.
Geek admission, back in the late 80s, I was a member of the Los Angeles Science Fantasy Society (LASFYS). Both Niven and Pournelle were also members at that time. They were both crusty pompous farts holding court at the clubhouse (yes, we had a clubhouse and yes there were a few girls who were members).
I actually hung out with Pournelle's son for a couple of years. He too was a SciFi geek.
Loved Lucifer's Hammer.
